xiaomi-sm8450/android_kernel_xiaomi_sm8450
1
0
Fork 0
Code Issues Pull Requests Actions Packages Projects Releases Wiki Activity

x86: Use x86_platform for iommu_shutdown

Browse Source 
This patch cleans up pci_iommu_shutdown() a bit to use
x86_platform (similar to how IA64 initializes an IOMMU driver).

This adds iommu_shutdown() to x86_platform to avoid calling
every IOMMUs' shutdown functions in pci_iommu_shutdown() in
order. The IOMMU shutdown functions are platform specific (we
don't have multiple different IOMMU hardware) so the current way
is pointless.

An IOMMU driver sets x86_platform.iommu_shutdown to the shutdown
function if necessary.

Signed-off-by: FUJITA Tomonori <fujita.tomonori@lab.ntt.co.jp>
Cc: joerg.roedel@amd.com
LKML-Reference: <20091027163358F.fujita.tomonori@lab.ntt.co.jp>
Signed-off-by: Ingo Molnar <mingo@elte.hu>
This commit is contained in:
FUJITA Tomonori
2009-10-27 16:34:44 +09:00
committed by Ingo Molnar
parent 7c9abfb884
commit 338bac527e
10 changed files with 13 additions and 26 deletions
Download Patch File Download Diff File Expand all files Collapse all files

6
arch/x86/kernel/pci-gart_64.c
View File

@@ -39,6 +39,7 @@
#include <asm/swiotlb.h>
#include <asm/dma.h>
#include <asm/k8.h>
#include <asm/x86_init.h>
static unsigned long iommu_bus_base; /* GART remapping area (physical) */
static unsigned long iommu_size; /* size of remapping area bytes */
@@ -688,12 +689,12 @@ static struct dma_map_ops gart_dma_ops = {
.free_coherent = gart_free_coherent,
};
void gart_iommu_shutdown(void)
static void gart_iommu_shutdown(void)
{
struct pci_dev *dev;
int i;
if (no_agp && (dma_ops != &gart_dma_ops))
if (no_agp)
return;
for (i = 0; i < num_k8_northbridges; i++) {
@@ -838,6 +839,7 @@ void __init gart_iommu_init(void)
flush_gart();
dma_ops = &gart_dma_ops;
x86_platform.iommu_shutdown = gart_iommu_shutdown;
}
void __init gart_parse_options(char *p)